Correct Answer : Rajputana
The old name of Rajasthan was Rajputana, which means "the country of the Rajputs":
Explanation :
The British called the area that is now Rajasthan "
Rajputana" in the 19th century. The name comes from the fact that the area was mostly ruled by Rajput rulers. The name "Rajputana" means "land of the Rajputs".
Formation of Rajasthan :
When India became independent, 23 princely states were combined to form the state of Rajasthan. The name "
Rajasthan" means "
the abode of the rajas".